All Questions
7
questions
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107
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Finding the Equation of motion for a vertical rotating disc with an added mass
I have been trying to figure out the equation of motion of a rotating disc with an added mass fixed on the surface of the disc at a certain distance $r$ from the disc's centre point.
I have ...
1
vote
1
answer
386
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Why do we evaluate the gravitational potential energy relative to the middle of the rod?
Here is the diagram for the problem and the question is asking me to find the angular velocity of the rod when it is completely vertical. I used the conservation of energy but I was wondering why I ...
- 83
1
vote
1
answer
141
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Derivation of balanced torque using conservation of energy [closed]
Let mass $m_1$ be placed at a distance of $x$ from the hinge such that the the plane makes an angle theta with horizontal
Then we drop $m_2$ at a particular distance $y$ from hinge such that after ...
- 326
2
votes
0
answers
174
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Cylinder rolling on an incline with offset center of gravity [duplicate]
Consider a hollow cylinder with a dense 1kg weight affixed to one point on the inside. If placed on an inclined plane, the cylinder will not roll down if there is sufficient friction.
If we ...
- 21
2
votes
1
answer
207
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Calculate distance of launched particles from a rotating disk
At my education we are busy with creating a small device that can spread thaw grains.
Our plan is as follows:
The particles should be spread by launching them from a fast rotating disk.
The particles ...
- 121
1
vote
2
answers
2k
views
Difference between potential centrifugal energy and rotational/kinetic energy
I'm having troubles to understand the difference between kinetic energy and potential centrifugal energy in some situations. I make an example where I am confused.
A object moves on a rod attached ...
- 375
1
vote
1
answer
491
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Determine the value of $g$ with rolling ball
At first, I thought the value of $g$ ($9.8m/s^2$) could be determined simply by placing a ball at the top of a ramp at a known height. The ball was released with no initial velocity, and the final ...
- 451